Lionel made both O gauge and "G" gauge (large-scale) Polar Express sets. According to their web site, both products are still available. Have you tried calling a local hobby shop? I'm sure there are also sets for sale online.

You can see a photo if you go to their web site (www.lionel.com), click on products, and search by "polar express" in the search box.

Hi Betsy
I have the full set for the Bachmann G Scale Polar Express - Comic book, VHS, track, train, cars, and even the bell accessory. Considering posting it on eBAY this fall. Let me know if you would like to make an offer before I post. Thanks, James